1. Use pod-level resource when feature is enabled and resources are set at pod-level
2. Edge case handling: When a pod defines only CPU or memory limits at pod-level (but not both), and container-level requests/limits are unset, the pod-level requests stay empty for the resource without a pod-limit. The container's request for that resource is then set to the default request value from schedutil.
This marks the pods with restartable init containers as
`UnschedulableAndUnresolvable` if the feature gate is disabled to avoid
the inconsistency in resource calculation between the scheduler and the
older kubelet.
* scheduler(NodeResourcesFit): calculatePodResourceRequest in PreScore phase
* scheduler(NodeResourcesFit and NodeResourcesBalancedAllocation): calculatePodResourceRequest in PreScore phase
* modify the comments and tests.
* revert the tests.
* don't need consider nodes.
* use list instead of map.
* add comment for podRequests.
* avoid using negative wording in variable names.
This change is to promote local storage capacity isolation feature to GA
At the same time, to allow rootless system disable this feature due to
unable to get root fs, this change introduced a new kubelet config
"localStorageCapacityIsolation". By default it is set to true. For
rootless systems, they can set this configuration to false to disable
the feature. Once it is set, user cannot set ephemeral-storage
request/limit because capacity and allocatable will not be set.
Change-Id: I48a52e737c6a09e9131454db6ad31247b56c000a
The method is used only for testing purposes. Given Resource data type
exposes all its fields, any invoker of ResourceList that is still
using the method outside of kubernetes/kubernetes can still either
copy paste the original implementation or implement a custom method
that's converting resources into proper Quantity data type.
Given the hugepage resource is a scalar resource, it's sufficient
the underlying code under fit_test.go to take into account any
extended resources. For predicate_test.go, the hugepage
resource does not play any role as the General predicates test cases
does not set any scaler resource at all.
Additionally, by removing ResourceList method, pkg/scheduler/framework
can get rid of dependency on k8s.io/kubernetes/pkg/apis/core/v1/helper.
